Window-blind.



T. MOINTOSH- WINDOW BLIND.

AAAAAAA TION FILED sEPT.27,191o

1,013,417. 1 Patented Jan.2, 1912.

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T, MoINTOSH.

WINDOW BLIND.

APPLICATION FILED SEPT. 27, 1910. 1,013,417, Patented Jan. 2, 1912.

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T. MOINTOSH.

wmnow BLIND. APPLICATION FILED SEPT. 27, 1910. 1,013,417. Patented Jan.2, 1912.

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wi/lmmao "UNITED STATES THOMAS memrosn, or mnxmrown, PENNSYLVANIA.

WINDOW-BLIND.

Specification of Letters Patent.

Patented Jan. 2, 1912.

Application filed September 27, 1910. Serial No.'584,089.

12) all whom it may concern I Be it known that I, THOMAS MoINiosH, asubject of the King of Great Britain, residing at Jenkintownf in thecounty of Montgomery and State of Pennsylvania,

have invented certain new and useful vImprovements in Window-Blinds, ofwhich the following is a specification. I

My invention relates toimprovements in window blinds, the object of theinvention being toprovide an improved blind comprising a series of slatswith improved means for holding the slats apart, permitting them pivotalmovement so as to exclude the light, and constructed to pile the slats.in the upper portion-of a frame or casement.

A further object is to provide improved means for raising and loweringthe slat supporting mechanism, and improved mounting for the blind whichmay be attached to any ordinary window frame.

With these and other objects in view, the invention consists in certainnovel features of construction and combinations and arrangements ofparts, as will be more fully hereinafter described and pointed out. inthe claims. In the accompanying drawings: Figure 1, 1s improvementsattached to a window frame.

Fig. .2, is a fragmentary View partly in section andpartly in elevation.Fig. 3, is a view in vertical cross section on the line 33 of Fig. 1.Fig. 4:, is a sectional elevationof the lower portion of theconstruction. Fig. 5, is a view in section on the line 55 of Fig. 2.Fig. 6 is a'detailed view upon an enlarged scale illustrating a trunnionof a slat leaving an aperture in one of the tapes as it passes over aroller, and Fig. 7 is a similar view illustrating the manner of suporting the slats in the upper portion of tlie frame. V

1, represents a window frame, 2, 2, the

sashes supported therein, and 3 the frame of my improved blind. Theframe 3 is secured to the window frame 1 in any approved manner, and itsvertical side members are hollow, and their inner walls are rovided withlongitudinal slots 4, throug which project the trunnions 5 at the endsof slats 6.

In the upper portion of the side members of frame 3, pulleys 7 aremounted and over these pulleys tapes 8 are mounted to run.

These tapes are provided with openings 9,

a view in front elevation illustrating my said. openings arranged inalongitudinal series an equal distance apart, and adapted to receivetrunnions 5 of slats 6, so as to move the slats vertically when thetapes8 are moved.

It will be noted that the upper cross member of the frame 3 is locatedabove the plane of pulleys 7, and constitutes a housing for the slats,which are piled therein as they are conveyed upward by the tapes 8, thelowermost slat in the pile in the housing serving to support thoseabove, and as each successive slat is moved upward by the one below, thetapes 8 move so as to free the trunnions of the slats from the tapes. Itshould be understood that the trunnions 5 are of less diameter than thethickness of the slats 6 so that when they are piled up in the top' ofthe case there is considerable space between the severaltrunnions. Thisis clearly shownin Figs. 2, 6 and 7 of the drawings. As the tapes moveupwardly they of course carry the slats upwardly and as the tapes passover the top of the rollers 7 the successive portions thereof evidentlymove outwardly from the line of the vertical portion or slats supportingportion, and in. so doing the por- I tion containing the aperture 9 ismoved away from the slats thereby withdrawing the apertured portion ofthe tape from the trunnion. This action is clearly shown in Fig. 6. Thetrunnions project slightly through the tape ifdesired and the rollers 7are grooved as at 7 to accommodate the projecting ends. The slats piledup in the top of the case rest on the. tape as shown in Fig. 7. Inlowering the slats the apertures 9 in passing over the rollers movetoward the trunnions and the trunnions ofthe lowermost slat drop intothe first-aperture as shown in Fig. 6. This first slat is then carrieddownwardly by the tape and the next slat in, order rests upon thetapesas shown in Fig. 7 As: soon as the next apertures in the tapesreach the ends of these trunnions, said trunnions drop into saidapertures as above explained. The apertures 9 are of sufiicient size topermit ready withdrawal and insertion of the trunnions but-must not betoo large as the upper edge wall of the aperture must pass between, the

Tlowermost trunnion and the one directly above. I

' The Figs. 6 and 7 are diagrams only, their sole purpose being toillustrate the cooperation of the slat trunnions and the tapes. It

1 pulleys supporting said will be noted that in these views the frame 3hasbeen omitted, showing the ends of the slats extended substantially tothe tapes instead of stopping at said frame as illustrated in the otherfigures of the drawings.

The slats 6 are all connected by flexible strips 10, which compel themtopivot simultaneously allowing the slats to be turned at an angle so asto exclude the light.

To move the blind up and down, it is simply necessary to grasp any ofthe slats, and move the blind in either direction, as the ends of therespective tapes 8 are connected and compelled to operate in unison aswill now be explained.

One end of one tape 8 is connected by a cord 11 with the opposite end ofthe other, tape, and is passed over pulleys 12, 13, 14:, and 15, asshown most clearly in Fig. 4. The other ends of the tapes 8 areconnected by a cord 16,'which is passed over pulleys 17, 13, 14, and 18.The cords at a central portion of the base of the frame cross eachotherfand to prevent undue wear on the cords, a roller 19 is supportedin a'vertical position and takes up this wear.

To balance the weight of the'sla-ts, suitable weights 20 are provided sothat the blind will remain at any position of ad' justment and renderthe movement of the blind an easy one.

Various slight changes might .be made in the general form andarrangement of parts described without departing from my invention, andhence I do not limit myself to the precise details set forth, butconsider my-v self at liberty to make such changes and alterations asfairly fall within the spirit and scope of the appended claims. I

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. A blind comprising two tapes, each having a longitudinal series ofopenings therein, slats, trunnions on the ends of the slats located inthe openings in the tapes, tapes whereby when said tapes are moved. overthe pulleys, they disengage themselves from the trunnions ofthe slats,the lowermost slat of thepilethus disengaged supporting the others,substantially as described.

2. In a bind, the combination with a frame, the upper portion of saidframe constituting a housing, of pulleys supported in the side membersof the frame atthe base of the housing, tapes passedv over saidpulleysand having in each a longitudinal series of openings, slats,trunnions on the ends of the and adapted ends of the slats slats,located in the openings in the tapes to be released from engagement withthe tapes when the latter pass over the pulleys pilmg the slats in thehousing, and means for moving said tapes simultaneously, substantiallyas described.

3. Ina blind, the combination with a frame, the upper portion of saidframe constituting a housing, of pulleys supported in the side membersofthe frame, at the base of the housing, tapes passed over said.pulleysand'having in'each a longitudinal series of openings, slats, trunnionson the ends of the slats, located in the openings in the tapes andadapted to be released from engagement with the tapes when the latterpass over the pulleys piling the slats in the housing, and crossedflexible connecting devices connecting the opposite ends of therespective tapes, substantially as described.

4. In a blind," the combination with a frame the upper portion of saidframe constituting a housing, of pulleys supported in the side membersof the frame, at the base of the housing, tapes passed over said pulleysand having in each a longitudinal series of openings, slat-s, trunnionson the ends of the slats, located in the openings in the tapes andadapted to be released from engagement with the tapes when the latterpassover the pulleys piling the slats in the housing, crossed flexibleconnecting devices con necting the opposite ends of the res ectivetapes, pulleys over which said flexib e connecting devices are passed,and a roller located between the connecting devices at the point ofcrossing, substantially as described.

5. In a blind, the combination with a frame, the upper portion of saidframe constituting a housing, of pulleys supported in the side membersof the frame, at the base of the housing, tapes passed over said pulleysand having in'each a longitudinal series of openings, slats, trunnionson the located in the openings in the tapes and adapted to be releasedfrom engagement with the tapes when the latspective tapes, and flexiblestrips connecting all of said slats, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses;

" THOMAS MoINTOSH.

Witnesses C. E." Form,

R. H. KRENKEL.

